Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/w10121833 |
Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites | |
Bashir, Rashid; Chevez, Eric Pastora | |
通讯作者 | Bashir, Rashid |
来源期刊 | WATER
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ISSN | 2073-4441 |
出版年 | 2018 |
卷号 | 10期号:12 |
英文摘要 | Oilfield-produced brine is a major source of salt contamination in soil and groundwater. Salt transport in the upper soil layers is controlled by the atmospheric interactions via infiltration of meteoritic water. In lower layers, it is controlled by fluctuations in the groundwater table, which are also linked to atmospheric interactions via groundwater recharge. Therefore, climate is an important factor in the movement of contaminants in the unsaturated zone. A one-dimensional variably saturated flow and transport model with soil atmospheric boundary conditions was used to estimate the effect of climate type and soil texture on soil water and salt dynamics in variably saturated soils. Numerical simulations were run with Hydrus-1D, using daily climate data. Simulations were run for nine-year climate datasets for different ecoclimatic locations in Alberta, Canada. Results indicated that coarse-grained materials are good evaporation barriers, resulting in water gain conditions at the ground surface, irrespective of the climate type. However, the quantity of water gain and associated advective fluxes are a function of climate. Results also indicated that flow and transport in fine-textured soils is more dependent on the climate type. For fine-grained soils in arid climatic conditions, net water loss at the ground surface and upward migration of salt can be expected. For wetter climates, the upward migration of salt is less probable. |
英文关键词 | unsaturated flow and transport oilfield brine soil-atmosphere interaction finite element methods climate |
类型 | Article |
语种 | 英语 |
国家 | Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000455314300128 |
WOS关键词 | SOIL HYDRAULIC-PROPERTIES ; CONDUCTIVITY ; TEXTURE |
WOS类目 | Water Resources |
WOS研究方向 | Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/213656 |
作者单位 | York Univ, Lassonde Sch Engn, Dept Civil Engn, Toronto, ON M3J 1P3, Canada |
推荐引用方式 GB/T 7714 | Bashir, Rashid,Chevez, Eric Pastora. Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites[J],2018,10(12). |
APA | Bashir, Rashid,&Chevez, Eric Pastora.(2018).Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites.WATER,10(12). |
MLA | Bashir, Rashid,et al."Spatial and Seasonal Variations of Water and Salt Movement in the Vadose Zone at Salt-Impacted Sites".WATER 10.12(2018). |
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